How early do mommies gave birth for their 1st child ? What are the symptoms of labour ?

Hi Mommies , When do you guys go into labour for your 1st pregnancy ? Any symptoms to take note of ? As im currently experiencing braxton hicks and currently 34 weeks pregnant. The pain come and go , but at times my stomach will harden for good 1min . Anyone experience giving birth before EDD or as early as 34 weeks ?